Sun visor



FIG. 1 is a top plan view of the sun visor showing my new design;

FIG. 2 is a left side elevational view, the right side being a mirror image thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof; and

FIG. 5 is a left side elevational view with the visor in a raised position. 

The ornamental design for a sun visor, as shown and described. 